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Voltammetric Behavior of Silver Ions at a Carbon Paste Electrode in the Presence of 2,5,8‐Trithia[9]‐ m ‐cyclophane
Author(s) -
Lubert KarlHeinz,
Beyer Lothar,
Casabó Jaume,
PérezJiménez Consuelo
Publication year - 1998
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/(sici)1521-4109(199809)10:12<860::aid-elan860>3.0.co;2-s
Subject(s) - cyclophane , redox , electrode , chemistry , electrochemistry , adsorption , ligand (biochemistry) , inorganic chemistry , carbon fibers , carbon paste electrode , ion , cyclic voltammetry , materials science , crystallography , organic chemistry , crystal structure , biochemistry , receptor , composite number , composite material
The redox behavior of silver ion [Ag(I)] is studied at carbon paste electrodes (CPE) in presence of the macrocyclic ligand 2,5,8‐trithia[9]‐ m ‐cyclophane (TTCP) in ethanol. The formation of a Ag(I) complex of the TTCP is concluded from the appearance of two oxidation peaks and two corresponding reduction peaks at the CPE. Potentiostatic pretreatment (at potentials in the range from −0.4 V to +0.25 V) leads to the adsorption of the ligand as well as the deposition of Ag(0) at the electrode surface, which reacts then to the Ag(I) complex during the anodic cycle. The results indicate that TTCP can be used as electrode modifier for the immobilization of silver at electrode surfaces.